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Specification : Bluetooth chip: AB1561 V5.0 Speaker Diameter: 40mm Frequence Range: 20-20KHz Impendance: 32ohms Sensitivity: 95+/-3dB Mic Sensitivity:-42±3dB Working time :25H Standby time ： 100H Charging time: 2.5H Bluetooth coverage:15M Battery Capacity :500mAH 3.8-4.2V |
